baber/WOPTO huggingface dataset:
Patent GB-2471498-A (GB)
Title: A microwave push-pull amplifier using broadband hybrid stripline couplers
Inventor: MCLELLAN JOHN
IPC: H03F3/60
Filed: 2009-07-01
Abstract: A multi-octave microwave push-pull amplifier comprises two identical amplifiers between input and output broadband hybrid stripline couplers. The use of hybrid stripline couplers instead of conventional balun transformers allows a wider bandwidth. Even-order amplifier distortion products are cancelled in the output coupler. Low intermodulation is achieved over a very wide frequency band, with low passband ripple and lower power consumption than a single-ended circuit. The broadband amplifier may be used in radar systems.
Patent GB-2459212-A (GB)
Title: Methods and apparatus for harvesting potential energy downhole
Inventor: PABON JAHIR
IPC: E21B41/00
Filed: 2007-12-13
Abstract: Methods and apparatus for harvesting energy while moving a tool through a well are shown and described. The harvested energy can be used by the tool to perform work once it reaches an intended location in the well, or along the way. A considerable amount of potential energy is typically lost by oilfield tools as they move down through a borehole. Methods and apparatus described herein recover and/or store some of the energy during the downward movement of the tool.
Patent GB-2472229-A (GB)
Title: Ground aeration apparatus having reciprocating tines
Inventor: HARGREAVES JONATHAN WILLIAMS
IPC: A01B45/02
Filed: 2009-07-28
Abstract: Aground aeration apparatus comprises a reciprocating tine12having a fluid conduit22with an outlet26via which fluid passing along the conduit may exit the conduit; first210and second400pressurised fluid supplies, connected to the fluid conduit via first and second valves30,430, respectively; wherein the first fluid supply has a higher pressure than the second fluid supply. The apparatus may further comprise timing apparatus for controlling the operation of the valves wherein the second valve opens and closes before the first valve. The first fluid which may be air, may be used as a propellant to eject the second fluid, which may be a gel, from the tine. The reciprocating action may be driven by a crank13and the timing of the valves may be regulated by reference to the rotation of the crank.
Patent GB-2462562-A (GB)
Title: Multi-phase flow meter for electrical submersible pumps using artificial neural networks
Inventor: CROSSLEY ALEX W
IPC: G01F1/34
Filed: 2008-06-11
Abstract: A multiphase flow meter used in conjunction with an electrical submersible pump system in a well bore includes sensors to determine and transmit well bore pressure measurements, including tubing and down hole pressure measurements. The multiphase flow meter also includes at least one artificial neural network device to be used for outputting flow characteristics of the well bore. The artificial neural network device is trained to output tubing and downhole flow characteristics responsive to multiphase-flow pressure gradient calculations and pump and reservoir models, combined with standard down-hole pressure, tubing surface pressure readings, and the frequency applied to the electrical submersible pump motor.
Patent GB-2466131-A (GB)
Title: Method for shortening or reducing the slack in a hydraulic conduit by bending the conduit around movable members.
Inventor: HOWARD PETE
IPC: E21B23/14
Filed: 2008-09-08
Abstract: Disclosed is a method of adjusting a length of a hydraulic conduit by a length adjustment device 10. The device has a set of deforming members 110A, which are placed in an initial position allowing the conduit to be placed inside the device. The conduit is then deformed by actuating or moving at least one deforming member thereby reducing the length of the hydraulic conduit as measured in a substantially straight line. The deforming step may have the deforming member move to a position in which it abuts or touches the conduit, and then moves further to deform the conduit, finally the deforming member is moved to a position so as to allow the conduit to be released. The actuators may be controlled by a processor via adjusters 122 at the ends of the actuators. The conduit by may be twisted about its longitudinal axis after the length has been reduced. The apparatus is designed to be used to provide equal spacing for sensors on a cable down a well or borehole.
Patent GB-1164506-A (GB)
Title: Preparation of alpha,omega-Dicarboxylic Acids having Eight to Sixteen Carbon Atoms
IPC: C07C51/31
Filed: 1967-03-02
Abstract: 1,164,506. α-#-Dicarboxylic acids. COLUMBIAN CARBON CO. 2 March, 1967 [31 March, 1966], No. 10013/67. Heading C2C. α,#-Dicarboxylic acids are prepared by reacting a cycloaliphatic compound (8-16 C in the ring) in the liquid phase with molecular oxygen gas at a partial pressure not exceeding 1À5 atmospheres in the presence of a catalyst comprising cobalt and manganese salts. Cycloalkanes, cycloalkenes, cycloalkanones and cycloalkanols or mixtures thereof may be used and cyclo-octanone, cyclodecanone, and cyclododecanone are preferred. The compound may be dissolved in a fatty acid (1-7 C) and the manganese and cobalt acetates or naphthenates are preferred salts. The catalyst may be activated by molecular or combined bromine. The reaction may be continuous or batchwise, under a reflux at between 65‹ and 200‹ C. Examples describe the preparation of suberic acid, and 1,12-dodecanedioic acid.
Patent GB-165255-A (GB)
Title: Improvements in the lubrication of internal combustion engines and other machinery
IPC: F16N7/32
Filed: 1920-04-09
Abstract: 165,255. Alexander, R. M. April 9, 1920. Air-pressure sprayers.-Oil is sprayed to internal-combustion engines and other machinery by means of an air jet a<2> disposed within and in close proximity to an oil nozzle b'.
Patent GB-721613-A (GB)
Title: Improvements in or relating to optical devices for producing interference fringes and optical apparatus incorporating such devices
IPC: G01B9/02
Filed: 1952-04-21
Abstract: 721,613. Optical systems. COLEMAN, K. R., and KAPELLA, Ltd. July 8, 1953 [April 21, 1952], No. 10027/52. Class 97 (1). An optical device for producing interference fringes comprises an illuminated pinhole and an approximately conical element for producing from the pinhole a vertical image in the form of an annulus, the rays interfering with one another so that when viewed from any point on the axis of the cone a system of concentric circular interference fringes will be seen. The device is used particularly for testing the parallelism or alignment of axes: the conical element may be reflecting or refractory. As shown in Fig. 1 the device comprises a source of light from which is focused by lenses A<SP>1</SP> on a pinhole B in a mask B<SP>1</SP> an annular vertical image D of the pinhole being formed at the mask B by a refractor C having a conical surface C<SP>2</SP> which may be slightly curved to correct spherical aberration. A system of circular fringes is visible to an eye located on the axis of the cone and can be used to indicate the alignment of this cone axis with the arcs of an observing device such as a telescope. For testing parallelism the device of Fig. 1 is accurately mounted on one of the bodies to be tested while to the other is fixed an observing telescope, Fig. 6, comprising an objective H focusing the fringe system on a graticule K for observation of an eyepiece J, the displacement of the fringes relative to the centre of the graticule indicating any lack of parallelism. For testing alignment the objective H is omitted and the graticule K is suitably spaced from the eyepiece to appear superimposed on the fringe system. By arranging for a lens to slide into or out of the optical path a single observing instrument having two graticules may by arranged to carry out one or other of these tests. Mirrors may be arranged to permit convenient observation. For testing the centring of a lens S, Fig. 12, on a spindle R aligned with the fringe-producing device A, A<SP>1</SP>, B, C, light from the latter passes a partially transparent reflector Q and is reflected by the front surface of the line S and by the reflector Q into a graticule, the fringes being observed in an eyepiece N and any variation therein caused by rotation of the spindle R indicating lack of centring of the lens on the spindle. A similar arrangement may be used to check whether the two surfaces of a lens are accurately coaxial.
Patent GB-806686-A (GB)
Title: Improvements in and relating to aircraft undercarriages
Inventor: SHARPLES GEOFFREY FRANCIS
IPC: B64C25/34
Filed: 1956-03-29
Abstract: 806,686. Aircraft undercarriages. ENGLISH ELECTRIC CO. Ltd. March 21, 1957 [March 29, 1956], No. 10040/56. Class 4. To facilitate the stowage of an undercarriage having twin side-by-side wheels between the upper and lower surfaces 31, 30 of a thin aircraft wing, one wheel 2 is journalled at 3 to the undercarriage leg 1 and the other wheel 4 is journalled by a stub axle 5 to a foldable outrigger structure consisting of members 8 rigid with leg 1 and formed with a jury pivot 7 for the attachment of arms 6 secured to the stub axle 5. Arms 6 are fast with a lug 14 and members 8 carry a lug 15, both lugs being connected to a toggle linkage 13 pivotally attached to the ram of a jack 10. The other end of the jack is secured to one arm of a bellcrank pivoted at 12 to leg 1, the other arm 11 of the bellcrank being connected by rod 20 and arm 21 to a bayonet type of locking mechanism (not shown) coaxial with journal 3 for locking engagement with stub-axle 5 when wheel 4 and arms 6 are swung about pivot 7 to the dotted-line landing position of Fig. 2. The undercarriage is retracted into the wing with the wheels in the side-by-side position shown in Fig. 2, subsequent operation of jack 10 initially freeing the lock and then swinging wheel 4 and arms 6 from the chain dotted to the full line positions shown in Fig. 2.
Patent GB-634581-A (GB)
Title: Production of acetals of ª‰-haloaldehydes
Filed: 1947-04-16
Abstract: Acetals of b -haloaldehydes are produced by reacting an a , b -ethylenically unsaturated ether with an aliphatic alcohol, a halogen, and an alkaline agent.  The acetals have the formula <FORM:0634581/IV (b)/1> where R is the residue of an aliphatic alcohol, R1 the radical of an alcohol or phenol, including oxygen or sulphur-interrupted hydrocarbon radicals, R2, R3 and R4 hydrogen or hydrocarbon radicals, and X halogen such as chlorine or bromine. Unsaturated ethers include the various methyl to butyl, dodecyl, octadecyl, phenyl, cresyl, and benzyl ethers of such alcohols as vinyl, isopropenyl, butenyl, and a - or b -phenyl vinyl alcohols, also b -methoxy ethyl vinyl ether, and b -methyl thioethyl vinyl ether.  Lower alkyl, i.e. methyl to butyl, vinyl ethers are of special interest and with the corresponding lower alcohols give symmetrical lower alkyl acetals. The alkaline agents include alkali, e.g. lithium, sodium, and potassium, and alkaline earth, e.g. calcium and barium, oxides, hydroxides, alcoholates, carbonates, and bicarbonates. Temperatures may be from -60 to 150 DEG  C. or above, generally from about 0 DEG  to 50 DEG  C.  Pressure may be atmospheric, or higher if the temperature is above the boiling point of the ether or alcohol to be reacted.  In examples, methyl vinyl ether is added at temperatures of -60 DEG  or -5 DEG  to 0 DEG  C. to sodium methylate, sodium hydroxide in methanol or calcium methylate, and chlorine passed in to give dimethyl chloroacetal.
Patent GB-556990-A (GB)
Title: Improvements in or relating to electromagnetic interrupters
IPC: H02M7/62
Filed: 1942-07-22
Abstract: 556,990. Converting. ERICSSON TELEPHONES, Ltd., and DISTIN, L. S. July 22, 1942, No. 10222. [Class 38 (ii)] [Also in Group XXXVII] In a system for converting D.C. to A.C., by means, for example of an interrupter M which connects a battery alternately to the two halves P1, P2 of a primary winding of a transformer, the secondary S of which supplies the A.C. to a circuit 7, 8, the interrupter M has a winding 1 associated with the primary circuit and a winding 2 associated with the secondary circuit so as to render the amplitude and frequency of vibration as independent as possible of variations of the applied voltage. The interrupter may be of the type described in Specification 526,940, [Group XXXVII], or may be modified as shown in Fig. 3 by mounting the pivoted mass 11, 17 on a flat spring 12, one end of which is supported in an aperture 16. With the parts in the position shown in Fig. 1, current flows from battery through P1 to coil 1 but is too small to affect the transformer. Armature 17 is attracted to pole 15 and contact x is closed to short circuit coil 1 so that full current flows from battery P1 and a secondary impulse is produced in the secondary s, which in addition to supplying the circuit 7, 8 will send a current through winding 2 which helps in rapidly destroying the flux in the interrupter magnet. The armature now swings back beyond its central position, closing contact y and opening contact x. This causes a primary current to flow through winding P2 and the re-energization of winding 1, which is assisted now by a secondary impulse in the winding 2.
Patent GB-770716-A (GB)
Title: Bearing and seal assembly
Inventor: WALBERG MAYNARD ELON
IPC: A01B23/06
Filed: 1955-04-07
Abstract: 770,716. Stuffing-box substitutes. ALLISCHALMERS MANUFACTURING CO. April 7, 1955, No. 10332/55. Class 122 (5). [Also in Group XXXIV] A bearing structure comprises a bearing consisting of an outer race 28, an inner race 27 and balls 29, rollers or the like, is packed by seals 31 at opposite sides of the bearing which is located between sleeves 22, 23, the sleeve 22 being fitted with end plates having clearance gaps 48 from the sleeve 23, and a packing 50 of semifluid grease being provided between the end plates 24 and the seals 31. The seals comprise each a pair of outer baffles 33, 37 secured to the race 28 and an inner baffle 40 fitted on the race 27, a sealing element 42 of felt or other suitable material being interposed between the outer and inner baffles. The baffles have clearances at their edges from opposed relatively rotatable surfaces.
Patent GB-978527-A (GB)
Title: Improvements in or relating to cubicles for electrical gear
Inventor: HUNTING SIDNEY CHARLES
IPC: H02B1/30
Filed: 1962-03-19
Abstract: 978,527. Structural joints. GENERAL ELECTRIC CO. Ltd. March 19, 1963 [March 19, 1962], No. 10437/62. Heading E1K. [Also in Divisions H1 and H2] An electric switchboard &c. has a framework composed of angle section main girders 2, 3 and channel section subsidiary girders 6, the angle girders being connected to the channel girders by planar T-shaped brackets 7 (Fig. 4) whose cross limb 8 is bolted to the angle girder and whose down limb 9 is welded to the base of the channel girder. Channel girders are interconnected by further brackets 10 (Fig. 5) whose tongue 14 is similarly welded to the base of a channel girder. The framework is assembled using bolts 5 having tapped heads, the switch board panels (Fig. 1 not shown) being attached to them by screws.
Patent GB-987003-A (GB)
Title: Improvements in or relating to composite products of plastic materials
Inventor: WILLIAMS TREVOR NORMAN
IPC: B05D3/10
Filed: 1963-03-15
Abstract: 987,003. Non-metallic pipes. BRITISH CELLOPHANE Ltd. March 13, 1964 [March 15, 1963], No. 10447/63. Heading F2P. [Also in Division B5] A fibrous mat is spirally wound in contact with the surface of a tube of a poly-3,3 bis (halogenoalkyl) oxetane (preferably poly-3,3 bis (chloromethyl) oxetane) which has been treated with a solvent which swells the surface, the mat is treated with an uncured polyester or epoxy resin, the tube is placed in an outer concentric moulding tube, and the resin is cured. The fibrous mat may be of glass, mineral, vegetable or synthetic fibres or a woven or non woven cloth of such fibres. Specifications 723,777 and 758,450 are referred to.
Patent GB-527204-A (GB)
Title: Improvements relating to de-aeration of liquids and particularly of boiler feed water
IPC: B01D19/00
Filed: 1939-04-04
Abstract: 527,204. De-aerating liquids. ARROWSMITH, G., and HICK, HARGREAVES, & CO. Ltd., April 4. 1939, No. 10455. [Class 1 (i)] Liquids, e.g. boiler feed water, are de-aerated by atomizing drops or fine streams of the liquid by means of a high-velocity steam jet. Apparatus for the process comprises a chamber into which the liquid is introduced, means for introducing steam, and means for removing liberated gases. The liquid may be sprayed upon a perforated tray or a vertical series of such trays, preferably annular trays. Steam jets, directed outwards may be provided, e.g. in pipes of ring or star form arranged in the central space, or the jets may be directed inwards. Reduced pressure may be maintained in the chamber, the steam pressure being atmospheric or greater. As shown, a chamber 1 is provided with a nozzle box 2 (which may be replaced by an injection pipe) the supply of water to which is controlled by the floatoperated valve 6. The spray falls into a tray 8 perforated at the outer part, and the drops passing through fall into an annular perforated tray 11. Steam is led through pipe 12 to nozzle distributors 14, 15. Liquid collecting at the bottom of the chamber is removed via pipe 4. A steam injector 16 withdraws air and maintains a vacuum within the chamber.
Patent GB-803909-A (GB)
Title: Improvements relating to shell moulds for casting metals
IPC: B22C23/00
Filed: 1957-04-01
Abstract: 803,909. Molding-processes. GENERAL MOTORS CORPORATION. April 1, 1957 [April 20, 1956], No. 10534/57. Class 83 (1). A reinforced shell mould section comprises a mould half, to the back of which is detachably secured a flask having a wall separated from the back of the mould half by a space packed with a refractory comminuted material such as sand. The shell half 14, Fig. 1, is made by blowing mix on to a heated pattern plate 10 carried on a vertically movable table 12. The shell may then be compressed by an electrically-heated press head 64, Fig. 3. The pattern and shell assembly, which includes a frame member 18, is then positioned beneath a flask 68, Fig. 4, spring-loaded clamps 90 thereon engaging the frame 18, and green sand is blown into the cavity 80 beneath the flask and the shell from a magazine 70. The shell and flask assembly is then stripped from the pattern by pins 50. An automatic or semi-automatic apparatus, Fig. 6, comprises a runway on which are movable a sand-resin blowhead and magazine assembly 114, an electrically-heated pressure head 116, and a green-sand blowhead and magazine assembly 118, which are located in turn over the pattern table 121. Hoppers 130, 132 containing green sand, and sand-resin mix respectively, are located at opposite ends of the runway. The green-sand blowhead 118 comprises arms 148 which hold the reinforced mould-section after stripping from the pattern, and deposit it on a conveyer 142. After casting, the flasks may be returned on the conveyer and removed therefrom, in the arms 148, to the moulding- machine.
Patent GB-258192-A (GB)
Title: Improvements in electric motor control systems
IPC: B60L7/12
Filed: 1926-04-21
Abstract: 258,192. General Electric Co., Ltd., (Laternser, A.). April 21, 1926. Regenerative systems.- During regeneration the motor 3 has its field 6 fed by a separate exciter 5 provided with a stabilizing- field-winding which is connected across two resistances 1, 2 arranged to carry the regenerated current in parallel. The object of the arrangement is to control the ratio of armature current to field current in the regenerating machine, and to adjust the braking force to the speed. The resistance 1 is preferably inductive. Automatic means may be provided for cutting out sections of the resistances, Four motors grouped successively in series and parallel may be braked according to the invention, and the resistances used in the arrangement may be the starting resistances of the motor.
Patent GB-105697-A (GB)
IPC: D05B23/00
Abstract: 105,697. Fairweather, W., (Singer Manufacturing Co.). Aug. 18, 1916. Sewing-machines; needles, vibrating laterally.- In a chain-stitch machine for overseaming or cross-stitching, of the type in which the needle 7, Fig. 1, and looper 23 vibrate in unison across the line of feed, the looper-carrying shaft is made in two sections 2, 2b, Fig. 2, in driving relation but relatively movable axially, the forward section being supported and axial y reciprocated by a bushing 25 which also carries the throat plate 42 sliding in a groove in the upper face of the bearing support 1<x>. The bushing is held on the section 2b between the flange 26 and the shaft section 2a which is secured to the section 2b by a rib 27, stud 28, and screw 30, and is driven from the section 2 by the key 32 and slot 31. The mechanism for vibrating the needle and looper comprises a three-armed lever 35, one arm 36 being connected to the bushing 25 by the link 38, a second arm 65 being connected to the needle gate above its pivot 4 by a link 63, and the third arm 36<x> being adjustably connected by a link 45 to an arcuate lever 49 operated by a cam 53 mounted on a stud S, which has a shank disposed eccentrically thereto to allow for wear between the camgear 54<x> and the gear 55 on the looper-shaft meshing therewith.
Patent GB-1075564-A (GB)
Title: Process for preparing carnitine chloride
Inventor: BINON FERNAND
IPC: A61K31/205
Filed: 1966-03-10
Abstract: Carnitine chloride is prepared by the hydrolysis of carnitinamide chloride with hot aqueous oxalic acid, or by reacting carnitinamide chloride with an alkyl nitrite in glacial acetic acid.
Patent GB-1236677-A (GB)
Title: Production of elastomers having improved building tack
Inventor: TARNEY ROBERT EDWARD
IPC: C08L23/16
Filed: 1969-02-27
Abstract: 1,236,677. Tackifying rubbers. E.I. DU PONT DE NEMOURS & CO. 27 Feb., 1969 [27 Feb., 1968; 8 Nov., 1968], No. 10677/69. Headings C3P and C3Q. A hydrocarbon elastomer is mixed with an organic cyclic resin having at least one polar functional group and a molecular weight of at least 200, if necessary the mixture is aged in the absence of an activating agent until part of the tackifier blooms to the surface of the mixture, and the surface is exposed to ozone or U.V. light in conjunction with free oxygen to increase the peel tack. Exemplified rubbers are EPT, SBR and reclaim, and exemplified resins are rosin, rosin derivatives, terpene and isoprene resins and derivatives thereof. The compositions may also contain conventional fillers, curatives &c.
Patent GB-493718-A (GB)
Title: Improvements in or relating to presses and the like (or attachments therefor) for moulding flat belting and the like
IPC: B30B15/00
Filed: 1937-04-15
Abstract: 493,718. Moulding rubber belting <etc.; vulcanizing. DUNLOP RUBBER CO., Ltd., WALKER, F., and SHAW & CO., Ltd., F. April 15, 1937, No. 10708. [Classes 70 and 87 (ii)] Relates to platen presses for moulding flat belting of rubber &c. and of the kind in which movable bars between the platens are used for determining the longitudinal edges of the belt, and consists in means for operating devices for controlling the bars. As shown, the lower movable platen of an hydraulic press is provided at each side with longitudinal bars 16 for determining the width and thick - ness of the moulded belt. Distance pieces 17 are arranged at intervals along each side of the platen and abut against guided pieces 21 carrying pins 27 engaging in inclined slots 28 of vertically guided blocks 22 that are raised by connecting-rods 33 on cranks 34 on shafts 35 extending the whole length of the platen. The shafts 35 are rotated by hydraulicallyoperated pistons 37 through racks and pinions, and in accordance with the movements of the platen. When the blocks 22 are in their highest positions, their vertical sides act as abutments for the outer edges of the pieces 21. When the blocks are lowered, the slots 28 cooperate with the pins 27 to withdraw the pieces 21 so that the distance pieces and longitudinal bars 16 can be displaced, to enable the moulded belt to be removed.